Die Schwalbe
The search command is not correct.
COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT K='Andernachschach' AND S='L'Alfiere di Re'
atomic expression must have form 'field = value' [( COMMENTDATE >= $$NUMBER0 AND NOT K = $$STRING1 AND NOT K = $$STRING2 AND S = $$STRING3 ALFIERE DI RE $$STRING4]